Extraction properties of tetramethylmalonamide resin for actinide ions

アクチノイドイオンに対するテトラメチルマロンアミド樹脂の抽出特性

島田亜佐子 ; Nash, K.*; Alexandratos, S.*; Yang, Y.*

Shimada, Asako; Nash, K.*; Alexandratos, S.*; Yang, Y.*

The extraction properties of tetramethylmalonamide (TMMA) resin have been studied for the separation of actinides from radioactive waste solutions. High weight distribution ratios (w) of Th and U were obtained from HNO $_{3}$ and HCl solutions in the concentration range 0.01 to 10 M. w of Am was over 60 from HNO $_{3}$ solutions in that concentration range, however, it decreased to 5 from 0.01 to 1 M HCl solutions. The influence of co-existing metal ions on w of Am from 3 M HNO $_{3}$ solution was studied. w of Am was decreased with an increasing Fe $^{3+}$ concentration due to the competition. On the other hand, w of Am was slightly increased in the presence of Ni $^{2+}$ . In order to evaluate stripping agent, the influence of some organic acids and chelate agents on w of Th and U were investigated.

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発表会議名	:	242nd American Chemical Society National Meeting & Exposition
開催年月	:	2011/08
開催都市	:	Denver
開催国	:	U.S.A.
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